Antenna control system

CAFC
  • US 6,538,619 B2
  • Filed: 02/11/2002
  • Issued: 03/25/2003
  • Est. Priority Date: 11/04/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of adjusting a fixed beam elevation in a cellular base station telecommunication system, the system developing a beam and having a panel antenna adapted to mount a plurality of vertically spaced radiating elements, the method comprising:

  • providing a differential electromechanical phase shifter having a transmission line section coupled to said radiating elements, and a transmission line input which is moveable relative to said transmission line section to differentially adjust physical path lengths of transmission line outputs to said coupled radiating elements; and

    from a location remote from the antenna, effecting controlled movement of said transmission line input relative to said transmission line section to adjust the beam from a first fixed elevation to a second fixed elevation.

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